/*
 * Copyright (C) 2008 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.gxp.compiler.parser;

import com.google.gxp.compiler.alerts.SourcePosition;

/**
 * {@code Exception} thrown when an unsupported external entity is found.
 */
public class UnsupportedExternalEntityException extends RuntimeException {
  private static final long serialVersionUID = -1;
  private final SourcePosition pos;
  private final String systemId;
  private final String publicId;

  public UnsupportedExternalEntityException(SourcePosition pos,
                                            String publicId, String systemId) {
    this.pos = pos;
    this.publicId = publicId;
    this.systemId = systemId;
  }

  public SourcePosition getSourcePosition() {
    return pos;
  }

  public String getEntity() {
    return (
        "PUBLIC " + (publicId != null ? "`" + publicId + "`" : "<null>") +
        " SYSTEM " + (systemId != null ? "`" + systemId + "`" : "<null>"));
  }
}
